The "SFRV" starts with a VLTOR MUR 1A (Modular Upper Receiver w/ forword assist). developed to give a MilSpec correct upper receiver with a thicker wall and stronger platform. This more rigid upper receiver increases accuracy and reliability, while extending the life of the interfacing components..Construction:7075 aircraft-grade aluminum forging. Prior to machining, the forging is fully stress relieved; heat treated, aged twice and undergoes a proprietary cryogenic treatment Weight: MUR-1A (with assist) weighs less than 10 oz.Color/Finish Black matte (antireflection/glare) Hard coat anodized (Type-III, Class 2). Bore’s surface in coated with dry film lube, over the anodized surface. MilStd-1913 scope mounting rail. Fits all AR-type lower receivers made to Milspec standards. Billet Charging Handle. Then we add an
R. A. Select™ 5.56MM Spiral Fluted Barrel - 16" BLK.There are a number of advantages to polygonal rifled barrels; such as less bullet deformation, resulting in reduced drag as well as prolonged barrel life, not to mention ease of cleaning. These barrels were made to our exact specifications & drawings and made of 416R Stainless steel. We control the manufacturing process to provide the most accurate barrel that our Select grade barrels shoot Sub-MOA at 100 yards with match ammo.Features: *416 R ordnance grade stainless steel produced in Germany by the same mill as H&K,*F bar rated = for use by all Nato country’s,*Extensions made from 4140 AE = aircraft grade steel,*Manufacturing proprietary processes creates a stress free product that has a hardened surface on the bore. To improve the wear and longevity,*M4 feed ramps on extensions to current production standards to ensure conformance between manufactures. Specs: Barrel Length: 16", Gas Block Seat: .750, Rifling: Polygonal 5 Groove, Weight: 32.0 oz, Stainless Steel: 416R, Feed Ramps: M4, Gas System: Mid-length, Chamber: 5.56MM, Finish: Black Oxide, Twist: 1X8, Thread Pitch: 1/2X28, Testing: MPI tested, Made in the USA! We use the
Parallax Tac. lo-pro adjustable gas block ( Experienced gunsmiths and shooters know the value of an adjustable gas block on gas operated AR-15 rifles and carbines. There is no cure all due to the fact that there are a wide variety of guns, ammo, and shooting styles. Every firearm and ammunition combination performs best when it is individually tuned for optimum cycling reliability. This means the firearm needs enough gas to operate reliably, but not so much gas that it slam cycles.) Next we install the Samson Evolution Series 11" Free Float Handguard. Light weight and durable the perfect upgrade for LE/Military. The 1.8” facetted O.D .offers a comfortable shooting platform while not being to large for most shooters. Accessory rails can be added or removed easily to adapt the hand guard to your tactical needs (units can also be mounted at 45 degree offsets). Length: 11" ,Weight: 10.5 oz, inside diameter:1.56”, Continuous mil spec top rail, Duel anti rotation tabs, Thermal Bushings reduce heat transfer to hand guard, Tube Matl.: 6010 T6, Bushing Matl.: 303 Stainless, Mil-spec Hard coat Anodized, Supplied with 2x 2” rail kits and 1x 4” rail kit. Then we cap the barrel off with the R. A. Xtreme Darkness (XD) .223/5.56 Flash hider is designed to muzzle flash to preserve the shooter’s night vision by directing the gases away from the line of sight of the shooter and to reduce the flash visible to the enemy. The final piece of the build is a
Fail Zero EXO M16/4 Bolt Carrier w/ Enhanced Bolt Assembly (Bolt: Correct Headspace, Carpenter 158 steel, MPI inspected, Shot peened, Blacknitride+ processed [we do not use EXO coated bolts on Match chambers/barrels due to tighter tolerances]
Each B.T.A. High Performance custom upper is test fired and is certified to drop on and function with any mil-spec, AR lower unit.
All listings are cash discounted, add 3% for cc